The Silmarillion

From Author Wars - https://authorwars.com/publications/the-silmarillion-180901.html

Overview:

Title: The Silmarillion
Author: J. R. R. Tolkien
Year: 1978
Publisher: BCA by arrangement with George Allen & Unwin
Price: £4.95
Pages: 414
Binding: Hardcover
Type: Collection
Title Reference: The Silmarillion
Notes: Edited by Christopher Tolkien
http://www.tolkienbooks.net/php/details.php?reference=62140 indicates that there are two states of this edition, with differences in page number of a map and minor printing differences. "The Realms of the Noldor and the Sindar map is located facing page 121 in copies printed by Clowes and facing page 128 in copies printed by Unwin Brothers."